condition mean min max ZT0-3 0.15591858474999998 0.0 0.31183716949999996 ZT4-7 0.009520503 0.0 0.019041006 ZT8-11 0.0 0.0 0.0 ZT12-15 0.007916592833333335 0.0 0.01583318566666667 ZT16-19 0.0366719145 0.029316612 0.044027217 ZT20-23 0.0 0.0 0.0